Control channel signalling for triggering the independent transmission of a channel quality indicator

Abstract

The invention suggests a method for providing control signalling in a communication system, comprising the steps performed by a base station of the communication system of generating a control channel signal comprising a transport format and a channel quality indicator trigger signal for triggering a transmission of a channel quality indicator by at least one terminal to the base station, and transmitting the generated control channel signal to at least one terminal, wherein said transport format is a predetermined format for user data transmission by the at least one terminal to the base station and said control channel signal indicates a predetermined mode for reporting the channel quality indicator to the base station, wherein the channel quality indicator transmission is to be triggered by the at least one terminal based on the channel quality indicator trigger signal.

The invention claimed is: 
     
       1. An integrated circuit, comprising:
 one or more nodes, which, in operation:
 receive a control channel signal, wherein the control channel signal comprises a Modulation and Coding Scheme (MCS) Index, information on uplink resource blocks, and a channel quality indicator trigger for triggering transmission of an aperiodic channel quality indicator report; and 
 output the aperiodic channel quality indicator report; and 
 
 circuitry coupled to the one or more nodes, which, in operation:
 generates the aperiodic channel quality indicator report; and 
 determines whether to multiplex the aperiodic channel quality indicator report with data to be transmitted based on:
 the channel quality indicator trigger; 
 the MCS Index indicated by the control channel signal; and 
 a comparison of a number of resource blocks indicated by the control channel signal to a determined number of resource blocks. 
 
 
 
     
     
       2. The integrated circuit of  claim 1  wherein the circuitry, in operation,
 does not multiplex the aperiodic channel quality indicator report with data to be transmitted when the channel quality indicator trigger is set, the control channel signal indicates a determined value of the MCS Index and the number of resource blocks indicated by the control channel signal is smaller than or equal to the determined number of resource blocks; 
 multiplexes the aperiodic channel quality indicator report with data to be transmitted when the channel quality indicator trigger is set and the control channel signal does not indicate the determined value of the MCS Index; and 
 multiplexes the aperiodic channel quality indicator report with data to be transmitted when the channel quality indicator trigger is set and the control channel signal does not indicate a number of resource blocks that is smaller than or equal to the determined number of resource blocks. 
 
     
     
       3. The integrated circuit according to  claim 2  wherein the determined MCS Index has a value of 29. 
     
     
       4. The integrated circuit according to  claim 2  wherein the determined MCS Index indicates a redundancy version with value 1. 
     
     
       5. The integrated circuit according to  claim 1  wherein the circuitry, in operation, generates control signals to cause the aperiodic channel quality indicator report to be transmitted on a Physical Uplink Shared Channel (PUSCH) based on one of a plurality of reporting modes. 
     
     
       6. The integrated circuit according to  claim 1  wherein the determined number of resource blocks is smaller than 10. 
     
     
       7. The integrated circuit of  claim 1  wherein the circuitry, in operation,
 generates control signals to cause the aperiodic channel quality indicator report to be transmitted without multiplexing the aperiodic channel quality indicator report with data to be transmitted when the channel quality indicator trigger is set, the control channel signal indicates a determined value of the MCS Index and the number of resource blocks indicated by the control channel signal is smaller than or equal to the determined number of resource blocks; 
 generates control signals to cause the aperiodic channel quality indicator report to be transmitted with multiplexing the aperiodic channel quality indicator report with data to be transmitted using a redundancy version having a value of 1 when the channel quality indicator trigger is set, the control channel signal indicates the determined value of the MCS Index and the number of resource blocks indicated by the control channel signal is larger than the determined number of resource blocks; and 
 generates control signals to cause data to be transmitted using the redundancy version having the value of 1 without multiplexing the aperiodic channel quality indicator report with the data to be transmitted when the channel quality indicator trigger is not set and the control channel signal indicates the determined value of the MCS Index. 
 
     
     
       8. The integrated circuit of  claim 7  wherein the circuitry, in operation,
 generates control signals to cause the aperiodic channel quality indicator report to be transmitted with multiplexing the aperiodic channel quality indicator report with data to be transmitted using a redundancy version having a value other than 1 when the channel quality indicator trigger is set and the control channel signal does not indicate the determined value of the MCS Index; and 
 generates control signals to cause the data to be transmitted using the redundancy version having the value other than 1 without multiplexing the aperiodic channel quality indicator report with the data to be transmitted when the channel quality indicator trigger is not set and the control channel signal does not indicate the determined value of the MCS Index. 
 
     
     
       9. An integrated circuit, comprising:
 one or more nodes, which, in operation:
 output control channel signals to be transmitted, the control channel signals comprising a Modulation and Coding Scheme (MCS) Index, information on uplink resource blocks and a channel quality indicator trigger; and 
 receive aperiodic channel quality indicator reports associated with respective control channel signals including channel quality indicator triggers; and 
 
 circuitry coupled to the one or more nodes, which, in operation, determines whether a received aperiodic channel quality indicator report is multiplexed with received data based on:
 the MCS Index indicated by the associated control channel signal; and 
 a comparison of a number of resource blocks indicated by the associated control channel signal to a determined number of resource blocks. 
 
 
     
     
       10. The integrated circuit of  claim 9  wherein the circuitry, in operation,
 determines the aperiodic channel quality indicator report is not multiplexed with received data when the associated control channel signal indicates a determined value of the MCS Index and the number of resource blocks indicated by the associated control channel signal is smaller than or equal to the determined number of resource blocks; 
 determines the aperiodic channel quality indicator report is multiplexed with received data when the associated control channel signal does not indicate the determined value of the MCS Index; and 
 determines the aperiodic channel quality indicator report is multiplexed with received data when the associated control channel signal does not indicate a number of resource blocks that is smaller than or equal to the determined number of resource blocks. 
 
     
     
       11. The integrated circuit according to  claim 10  wherein the determined MCS Index has a value of 29. 
     
     
       12. The integrated circuit according to  claim 10  wherein the determined MCS Index indicates a redundancy version with value 1. 
     
     
       13. The integrated circuit according to  claim 9  wherein the one or more nodes receives the aperiodic channel quality indicator report transmitted on a Physical Uplink Shared CHannel (PUSCH). 
     
     
       14. The integrated circuit according to  claim 9 , wherein the determined number of resource blocks is smaller than 10. 
     
     
       15. The integrated circuit of  claim 9  wherein the circuitry, in operation,
 determines the aperiodic channel quality indicator report is not multiplexed with received data when a channel quality indicator trigger is set, the associated control channel signal indicates a determined value of the MCS Index and the number of resource blocks indicated by the associated control channel signal is smaller than or equal to the determined number of resource blocks; 
 determines the aperiodic channel quality indicator report is multiplexed with received data using a redundancy version with a value of 1 when the channel quality indicator trigger is set, the associated control channel signal indicates the determined value of the MCS Index and the number of resource blocks indicated by the associated control channel signal is larger than the determined number of resource blocks; and 
 determines the received data was transmitted using the redundancy version with the value of 1 without multiplexing the received data with the aperiodic channel quality indicator report when the channel quality indicator trigger is not set and the associated control channel signal indicates the determined value of the MCS Index. 
 
     
     
       16. The integrated circuit of  claim 15  wherein the circuitry, in operation,
 when the channel quality indicator trigger is set and the associated control channel signal does not indicate the determined value of the MCS Index, determines the aperiodic channel quality indicator report is multiplexed with received data using a redundancy version having a value other than 1; and 
 when the channel quality indicator trigger is not set and the associated control channel signal does not indicate the determined value of the MCS Index, determines the received data was transmitted using the redundancy version having the value other than 1 without multiplexing of the received data with the aperiodic channel quality indicator report. 
 
     
     
       17. A communication apparatus, comprising:
 a receiver, which in operation, receives a control channel signal, the control channel signal including a Modulation and Coding Scheme (MCS) Index, information on uplink resource blocks, and a channel quality indicator trigger; and 
 a transmitter, which, in operation, transmits an aperiodic channel quality indicator report, wherein the aperiodic channel quality indicator report is selectively multiplexed with data to be transmitted based on:
 the channel quality indicator trigger; 
 the MCS Index indicated by the control channel signal; and 
 a comparison of a number of resource blocks indicated by the control channel signal to a determined number of resource blocks. 
 
 
     
     
       18. The communication apparatus of  claim 17  wherein,
 the aperiodic channel quality indicator report is not multiplexed with data to be transmitted when the channel quality indicator trigger is set, the control channel signal indicates a determined value of the MCS Index and the number of resource blocks indicated by the control channel signal is smaller than or equal to the determined number of resource blocks; 
 the aperiodic channel quality indicator report is multiplexed with data to be transmitted when the channel quality indicator trigger is set and the control channel signal does not indicate the determined value of the MCS Index; and 
 the aperiodic channel quality indicator report is multiplexed with data to be transmitted when the channel quality indicator trigger is set and the control channel signal does not indicate a number of resource blocks that is smaller than or equal to the determined number of resource blocks. 
 
     
     
       19. The communication apparatus according to  claim 18  wherein the determined MCS Index has a value of 29. 
     
     
       20. The communication apparatus according to  claim 18  wherein the determined MCS Index indicates a redundancy version with value 1. 
     
     
       21. The communication apparatus according to  claim 17  wherein the aperiodic channel quality indicator report is transmitted on a Physical Uplink Shared Channel (PUSCH) based on one of a plurality of reporting modes. 
     
     
       22. The communication apparatus according to  claim 17  wherein the determined number of resource blocks is smaller than 10. 
     
     
       23. The communication apparatus of  claim 17  wherein,
 the aperiodic channel quality indicator report is transmitted without multiplexing of the aperiodic quality indicator report with data to be transmitted when the channel quality indicator trigger is set, the control channel signal indicates a determined value of the MCS Index and the number of resource blocks indicated by the control channel signal is smaller than or equal to the determined number of resource blocks; 
 the aperiodic channel quality indicator report is transmitted with multiplexing of the aperiodic channel quality indicator report with data to be transmitted using a redundancy version having a value of 1 when the channel quality indicator trigger is set, the control channel signal indicates the determined value of the MCS Index and the number of resource blocks indicated by the control channel signal is larger than the determined number of resource blocks; and 
 the data is transmitted using the redundancy version having the value of 1 without multiplexing the aperiodic channel quality indicator report with the data to be transmitted when the channel quality indicator trigger is not set and the control channel signal indicates the determined value of the MCS Index. 
 
     
     
       24. The communication apparatus of  claim 23  wherein,
 the aperiodic channel quality indicator report is transmitted with multiplexing of the aperiodic quality indicator report with data to be transmitted using a redundancy version having a value other than 1 when the channel quality indicator trigger is set and the control channel signal does not indicate the determined value of the MCS Index; and 
 the data is transmitted using the redundancy version having the value other than 1 without multiplexing of the data with the aperiodic channel quality indicator report when the channel quality indicator trigger is not set and the control channel signal does not indicate the determined value of the MCS Index. 
 
     
     
       25. A communication apparatus, comprising:
 a transmitter, which, in operation, transmits control channel signals, the control channel signals including a Modulation and Coding Scheme (MCS) Index, information on uplink resource blocks and a channel quality indicator trigger; and 
 a receiver, which, in operation:
 receives aperiodic channel quality indicator reports associated with respective control channel signals including channel quality indicator triggers, and 
 determines whether a received aperiodic channel quality indicator report is multiplexed with received data based on:
 the MCS Index indicated by the associated control channel signal; and 
 a comparison of a number of resource blocks indicated by the associated control channel signal to a determined number of resource blocks. 
 
 
 
     
     
       26. The communication apparatus of  claim 25  wherein the receiver, in operation,
 determines the aperiodic channel quality indicator report is not multiplexed with received data when the associated control channel signal indicates a determined value of the MCS Index and the number of resource blocks indicated by the associated control channel signal is smaller than or equal to the determined number of resource blocks; 
 determines the aperiodic channel quality indicator report is multiplexed with received data when the associated control channel signal does not indicate the determined value of the MCS Index; and 
 determines the aperiodic channel quality indicator report is multiplexed with received data when the associated control channel signal does not indicate a number of resource blocks that is smaller than or equal to the determined number of resource blocks. 
 
     
     
       27. The communication apparatus of  claim 26  wherein the determined MCS Index has a value of 29. 
     
     
       28. The communication apparatus of  claim 26  wherein the determined MCS Index indicates a redundancy version with value 1. 
     
     
       29. The communication apparatus of  claim 25  wherein the aperiodic channel quality indicator report is transmitted on a Physical Uplink Shared CHannel (PUSCH). 
     
     
       30. The communication apparatus of  claim 25  wherein the determined number of resource blocks is smaller than 10. 
     
     
       31. The communication apparatus of  claim 25  wherein the receiver, in operation,
 determines the aperiodic channel quality indicator report is not multiplexed with received data when a channel quality indicator trigger is set, the associated control channel signal indicates a determined value of the MCS Index and the number of resource blocks indicated by the associated control channel signal is smaller than or equal to the determined number of resource blocks; 
 determines the aperiodic channel quality indicator report is multiplexed with received data using a redundancy version with a value of 1 when the channel quality indicator trigger is set, the associated control channel signal indicates the determined value of the MCS Index and the number of resource blocks indicated by the associated control channel signal is larger than the determined number of resource blocks; and 
 determines the received data was transmitted using the redundancy version with the value of 1 without multiplexing the received data with the aperiodic channel quality indicator report when the channel quality indicator trigger is not set and the associated control channel signal indicates the determined value of the MCS Index. 
 
     
     
       32. The communication apparatus of  claim 31  wherein the receiver, in operation,
 when the channel quality indicator trigger is set and the associated control channel signal does not indicate the determined value of the MCS Index, determines the aperiodic channel quality indicator report is multiplexed with received data using a redundancy version having a value other than 1; and 
 when the channel quality indicator trigger is not set and the associated control channel signal does not indicate the determined value of the MCS Index, determines the received data was transmitted using the redundancy version having the value other than 1 without multiplexing with the aperiodic channel quality indicator report.